1.Environmental sustainability in healthcare: impacts of climate change, challenges and opportunities.
Ethan Yi-Peng KOH ; Wan Fen CHAN ; Hoon Chin Steven LIM ; Benita Kiat Tee TAN ; Cherlyn Tze-Mae ONG ; Prit Anand SINGH ; Michelle Bee Hua TAN ; Marcus Jin Hui SIM ; Li Wen ONG ; Helena TAN ; Seow Yen TAN ; Wesley Chik Han HUONG ; Jonathan SEAH ; Tiing Leong ANG ; Jo-Anne YEO
Singapore medical journal 2025;66(Suppl 1):S47-S56
Environmental damage affects many aspects of healthcare, from extreme weather events to evolving population disease. Singapore's healthcare sector has the world's second highest healthcare emissions per capita, hampering the nation's pledge to reduce emissions by 2030 and achieve net zero emissions by 2050. In this review, we provide an overview of the impact environmental damage has on healthcare, including facilities, supply chain and human health, and examine measures to address healthcare's impact on the environment. Utilising the 'R's of sustainability - rethinking, reducing/refusing, reusing/repurposing/reprocessing, repairing, recycling and research - we have summarised the opportunities and challenges across medical disciplines. Awareness and advocacy to adopt strategies at institutional and individual levels is needed to revolutionise our environmental footprint and improve healthcare sustainability. By leveraging evidence from ongoing trials and integrating sustainable practices, our healthcare system can remain resilient against environment-driven challenges and evolving healthcare demands while minimising further impacts of environmental destruction.
Humans
;
Climate Change
;
Delivery of Health Care
;
Singapore
;
Conservation of Natural Resources
;
Sustainable Development
;
Environment
2.Analysis of Acupoint Selection Rules of Acupuncture and Moxibustion in the Treatment of Female Menopausal Obesity
Min XU ; Yan TAN ; Wen-Ying SHI ; Chao KE ; Lu CAO ; Heng-Fen ZHANG ; Wei ZHANG
Journal of Guangzhou University of Traditional Chinese Medicine 2024;41(5):1262-1269
Objective To explore the acupoint selection rules of acupuncture and moxibustion for the treatment of female menopausal obesity and to provide reference for clinical acupuncture treatment of female menopausal obesity based on data mining techniques.Methods Clinical literature on acupuncture treatment of female menopausal obesity was searched by computer in CNKI,Wanfang,VIP,SinoMed,and PubMed database,and the time limit of searching was from the establishment of database to the date of 1 August 2023,and the literature was screened and extracted according to the inclusion and exclusion criteria.The association rule analysis was performed using IBM SPSS Moderler 18.0 software,and cluster analysis was performed using IBM SPSS Statistics 27.0 software.Results A total of 50 literature meeting the requirements were screened out,and 83 groups of acupoint prescriptions were extracted.Descriptive analysis showed that the intervention measures of acupuncture and moxibustion in the treatment of female menopausal obesity were mainly acupoint catgut embedding,electroacupuncture and auricular acupuncture.The top 7 acupoints with the highest frequency were Sanyinjiao(SP6),Zusanli(ST36),Shenshu(BL23),Tianshu(ST25),Guanyuan(RN4),Zhongwan(RN12)and Qihai(RN6).Stomach meridian of foot yangming,conception vessel,bladder meridian of foot taiyang and spleen meridian of foot taiyin are the most commonly selected meridians.In terms of specific acupoints,the main acupoints are intersection points,front-mu points and back-shu points.The acupoints are mainly distributed in the chest and abdomen,lower limbs and waist and back.By using data mining technology,the core acupoint pair of acupuncture and moxibustion for menopausal obesity is'Zusanli-Sanyinjiao',and the core acupoint prescription is'Zusanli,Sanyinjiao,Zhongwan,Tianshu,Shenshu,Guanyuan,Qihai';cluster analysis found 7 types of clinical acupoint clustering.Conclusion Acupuncture and moxibustion for the treatment of female menopausal obesity focuses on tonifying the essence of the kidney and restoring the qi mechanism and characteristics of acupoint selection of spleen and stomach qi.
3.Research of the mechanism of Huganning tablet in the treatment of nonalcoholic fatty liver disease based on network pharmacology and computer-aided drug design
Cong CHEN ; Xiang-hui ZHOU ; Bing ZHANG ; Yan-fen PENG ; Xin-ping YANG ; Qi-ming YU ; Xiang-duan TAN
Acta Pharmaceutica Sinica 2023;58(3):695-710
In this study, we explored the mechanism of Huganning tablet (HGNP) in the treatment of nonalcoholic fatty liver disease (NAFLD) based on network pharmacology and computer-aided drug design. Firstly, the potential ingredients and targets of HGNP were identified from TCMSP database, Swiss Target Prediction database, Chinese pharmacopoeia (2015) and literatures, and then the targets of HGNP intersected with NAFLD disease targets that obtained in GeneCards database to acquired potential targets. The bioconductor bioinformatics package of R software was used for gene ontology (GO) enrichment and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analysis. The network of “potential ingredient-key target-pathway” was formed in Cytoscape software to study the interactions between potential ingredients of HGNP, key targets, pathways and NAFLD. Based on the results of network pharmacology, the molecular docking analysis of the key targets and potential active ingredients in HGNP tablets with top degree in the network was conducted using Discovery Studio 2020 software, followed by molecular dynamics simulations, binding free energy calculation, drug-likeness properties analysis and ADMET (absorption, distribution, metabolism, excretion and toxicity) properties prediction.
4.Undiagnosed Takayasu Arteritis in Pregnancy
Qiu Shi Phong ; Yong Fatt Cheng ; Li Fen Tan ; Wan Syamimee Wan Ghazali
Malaysian Journal of Medicine and Health Sciences 2023;19(No.3):383-385
Takayasu arteritis is a chronic inflammation involving large vessels and it often occurs in young women of childbearing age. We described a case of a 29- year- old lady with previous history of proliferative ischemic retinopathy was
noted to have low upper limbs blood pressure and weak upper limb pulses postpartumly. An urgent CT angiogram
of thorax revealed features suggestive of large vessel vasculitis with involvement of ascending arch, descending aorta
and its main branches, corresponding to type II TA . She was diagnosed to have Takayasu arteritis post delivery, and
she underwent a successful pregnancy without intrapartum and postpartum complications. High index of suspicion
must be given for pregnant patient who have persistent low blood pressure and weak pulse for early detection to
avoid severe complications.
5.Cellular and Molecular Mechanisms of Intestinal Fibrosis
Xiaomin WU ; Xiaoxuan LIN ; Jinyu TAN ; Zishan LIU ; Jinshen HE ; Fan HU ; Yu WANG, ; Minhu CHEN ; Fen LIU ; Ren MAO
Gut and Liver 2023;17(3):360-374
Intestinal fibrosis associated stricture is a common complication of inflammatory bowel disease usually requiring endoscopic or surgical intervention. Effective anti-fibrotic agents aiming to control or reverse intestinal fibrosis are still unavailable. Thus, clarifying the mechanism underpinning intestinal fibrosis is imperative. Fibrosis is characterized by an excessive accumulation of extracellular matrix (ECM) proteins at the injured sites. Multiple cellular types are implicated in fibrosis development. Among these cells, mesenchymal cells are major compartments that are activated and then enhance the production of ECM. Additionally, immune cells contribute to the persistent activation of mesenchymal cells and perpetuation of inflammation. Molecules are messengers of crosstalk between these cellular compartments. Although inflammation is necessary for fibrosis development, purely controlling intestinal inflammation cannot halt the development of fibrosis, suggesting that chronic inflammation is not the unique contributor to fibrogenesis. Several inflammation-independent mechanisms including gut microbiota, creeping fat, ECM interaction, and metabolic reprogramming are involved in the pathogenesis of fibrosis. In the past decades, substantial progress has been made in elucidating the cellular and molecular mechanisms of intestinal fibrosis. Here, we summarized new discoveries and advances of cellular components and major molecular mediators that are associated with intestinal fibrosis, aiming to provide a basis for exploring effective anti-fibrotic therapies in this field.
6.Alterations in the intestinal microbiota of preterm infants with neurodevelopmental impairments: a prospective cohort study.
Yan LI ; Si-Liang LU ; Yan MO ; Lian-Fang JING ; Li-Ping YAO ; Wei TAN ; Qiu-Fen WEI
Chinese Journal of Contemporary Pediatrics 2023;25(7):689-696
OBJECTIVES:
To investigate the difference in intestinal microbiota between preterm infants with neurodevelopmental impairment (NDI) and those without NDI.
METHODS:
In this prospective cohort study, the preterm infants who were admitted to the neonatal intensive care unit of Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region from September 1, 2019 to September 30, 2021 were enrolled as subjects. According to the assessment results of Gesell Developmental Scale at the corrected gestational age of 1.5-2 years, they were divided into two groups: normal (n=115) and NDI (n=100). Fecal samples were collected one day before discharge, one day before introducing solid food, and at the corrected gestational age of 1 year. High-throughput sequencing was used to compare the composition of intestinal microbiota between groups.
RESULTS:
Compared with the normal group, the NDI group had a significantly higher Shannon diversity index at the corrected gestational age of 1 year (P<0.05). The principal coordinate analysis showed a significant difference in the composition of intestinal microbiota between the two groups one day before introducing solid food and at the corrected gestational age of 1 year (P<0.05). Compared with the normal group, the NDI group had a significantly higher abundance of Bifidobacterium in the intestine at all three time points, a significantly higher abundance of Enterococcus one day before introducing solid food and at the corrected gestational age of 1 year, and a significantly lower abundance of Akkermansia one day before introducing solid food (P<0.05).
CONCLUSIONS
There are significant differences in the composition of intestinal microbiota between preterm infants with NDI and those without NDI. This study enriches the data on the characteristics of intestinal microbiota in preterm infants with NDI and provides reference for the microbiota therapy and intervention for NDI in preterm infants.
Infant
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Child
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Infant, Newborn
;
Humans
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Child, Preschool
;
Infant, Premature
;
Prospective Studies
;
Gastrointestinal Microbiome
;
China
;
Infant, Premature, Diseases
;
Gestational Age
8.A summary of the Malaysian Clinical Practice Guidelines on the management of postmenopausal osteoporosis, 2022
Terence Ing WEI ONG ; Lee Ling LIM ; Siew Pheng CHAN ; Winnie Siew SWEE CHEE ; Alan Swee HOCK CH’NG ; Elizabeth GAR MIT CHONG ; Premitha DAMODARAN ; Fen Lee HEW ; Luqman bin IBRAHIM ; Hui Min KHOR ; Pauline Siew MEI LAI ; Joon Kiong LEE ; Ai Lee LIM ; Boon Ping LIM ; Sharmila Sunita PARAMASIVAM ; Jeyakantha RATNASINGAM ; Yew Siong SIOW ; Alexander Tong BOON TAN ; Nagammai THIAGARAJAN ; Swan Sim YEAP
Osteoporosis and Sarcopenia 2023;9(2):60-69
Objectives:
The aim of these Clinical Practice Guidelines is to provide evidence-based recommendations to assist healthcare providers in the screening, diagnosis and management of patients with postmenopausal osteoporosis (OP).
Methods:
A list of key clinical questions on the assessment, diagnosis and treatment of OP was formulated. A literature search using the PubMed, Medline, Cochrane Databases of Systematic Reviews, and OVID electronic databases identified all relevant articles on OP based on the key clinical questions, from 2014 onwards, to update from the 2015 edition. The articles were graded using the SIGN50 format. For each statement, studies with the highest level of evidence were used to frame the recommendation.
Results:
This article summarizes the diagnostic and treatment pathways for postmenopausal OP. Risk stratification of patients with OP encompasses clinical risk factors, bone mineral density measurements and FRAX risk estimates. Non-pharmacological measures including adequate calcium and vitamin D, regular exercise and falls prevention are recommended. Pharmacological measures depend on patients’ fracture risk status. Very high-risk individuals are recommended for treatment with an anabolic agent, if available, followed by an anti-resorptive agent. Alternatively, parenteral anti-resorptive agents can be used. High-risk individuals should be treated with anti-resorptive agents. In low-risk individuals, menopausal hormone replacement or selective estrogen receptor modulators can be used, if indicated. Patients should be assessed regularly to monitor treatment response and treatment adjusted, as appropriate.
Conclusions
The pathways for the management of postmenopausal OP in Malaysia have been updated. Incorporation of fracture risk stratification can guide appropriate treatment.
9.Xuebijing Injection Ameliorates H
Ping GENG ; Bing-Yu LING ; Hong-Liang ZHANG ; Jia-Li XIONG ; Ying WANG ; Fen YU ; Ding-Yu TAN ; Ji-Yang XU ; Hui-Hui WANG
Chinese journal of integrative medicine 2022;28(2):116-123
OBJECTIVE:
To investigate the protective effects and underlying mechanisms of Xuebijing Injection (XBJ) on the lung endothelial barrier in hydrogen sulfide (H
METHODS:
Sprague-Dawley rats were exposed to H
RESULTS:
The morphological investigation showed that XBJ attenuated H
CONCLUSIONS
XBJ ameliorated H
Animals
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Claudin-5
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Drugs, Chinese Herbal
;
Endothelial Cells
;
Hydrogen Sulfide
;
Phosphatidylinositol 3-Kinases
;
Rats
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Rats, Sprague-Dawley
;
Respiratory Distress Syndrome/drug therapy*
10.Applying Four-Chamber View and Three-Vessel Trachea View Combined With HD-Flow to Screening Fetal Cardiovascular Malformations in First-Trimester Pregnancy
Yu-jun HUANG ; Yun-xiao ZHU ; Dong-mei LIN ; Ying TAN ; Kun YUAN ; Wen-fen LIU
Journal of Sun Yat-sen University(Medical Sciences) 2022;43(1):146-151
ObjectiveTo evaluate the value of four-chamber view (4CV) and three-vessel trachea view (3VTV) combined with HD-flow in screening for fetal cardiovascular mailformations (CVMs) in unselected population during early pregnancy (11~13+6 weeks). MethodsFrom May 2018 to December 2019, 1145 fetuses were ultrasonic scanned routinely at 11~13+6 weeks at our hospital. The 4CV and 3VTV of fetal hearts were assessed by Power Doppler with flow direction (high definition flow, HD-flow),and the sonographic findings and follow-up outcomes were documented. Suspected CVMs were confirmed by the postpartum echocardiography or autopsy results. The sensitivities, specificities, PPVs and NPVs of diagnostic tests were compared among the two views and combined views. ResultsThere were 948 fetuses included in this study, with 19 cases of CVMs. The sonographic findings of 12 cases (12/19) with 22 CVMs were consistent entirely with the follow-up outcomes, including 7 cases of complex CVMs. In 1 case (1/19) with complex CVM, the diagnosis was not entirely consistent to the autopsy result. The 6 cases (6/19) of abnormal atrioventricular septum were not detected in early pregnancy. In the 19 cases of CVMs, abnormalities were found by displaying 4CV in 8 cases, by displaying 3VTV in 11 cases, and by displaying 4CV combined with 3VTV in 13 cases. The sensitivity of 4CV, 3VTV, 4CV+3VTV was 31.5%, 57.9%, 68.4%, with significant difference between 4CV and 4CV+3VTV(P=0.016) .The specificity and PPVs were all 100% (P>0.05). The NPVs of them were 98.6%, 99.1% and 99.4%, with no statistical difference (P>0.05). ConclusionsDisplaying the 4CV combined with 3VTV of fetal heart in the first-trimester ultrasound examination resulted in higher detect ratio of fetal cardiovascular malformations rather than scanning only with the 4CV, especially for those serious CVMs with poor prognosis, which is important for clinical management appropriately.


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